WaPNol SUMMARY 1 (PAPER 2) - EXAM
Questions Waves, Optics, Quantum Physics,
EM Spectrum
Format: Multiple Choice | Answer + Rationale
After Each Question
SECTION 1: WAVE PROPERTIES
(Questions 1-40)
Q1. What is the definition of the amplitude of
a wave?
A. The distance between two consecutive
peaks
B. The maximum displacement from the
equilibrium position
1
,C. The time for one complete oscillation
D. The number of waves passing a point per
second
ANSWER: B
RATIONALE: Amplitude is the maximum
displacement from the equilibrium position .
Q2. Which of the following is a longitudinal
wave?
A. Light
B. Radio wave
C. Sound
D. X-ray
2
,ANSWER: C
RATIONALE: Sound is a longitudinal wave
where particles oscillate parallel to the
direction of energy transfer. Light, radio
waves, and X-rays are transverse EM waves .
Q3. Calculate the wave speed if the frequency
is 50 Hz and the wavelength is 2 m.
A. 25 m/s
B. 52 m/s
C. 100 m/s
D. 200 m/s
ANSWER: C
3
, RATIONALE: Using the wave equation v =
fλ: v = 50 × 2 = 100 m/s .
Q4. What is the time period of a wave with a
frequency of 20 Hz?
A. 0.02 s
B. 0.05 s
C. 0.5 s
D. 20 s
ANSWER: B
RATIONALE: T = 1/f = 1/20 = 0.05 s .
4
Questions Waves, Optics, Quantum Physics,
EM Spectrum
Format: Multiple Choice | Answer + Rationale
After Each Question
SECTION 1: WAVE PROPERTIES
(Questions 1-40)
Q1. What is the definition of the amplitude of
a wave?
A. The distance between two consecutive
peaks
B. The maximum displacement from the
equilibrium position
1
,C. The time for one complete oscillation
D. The number of waves passing a point per
second
ANSWER: B
RATIONALE: Amplitude is the maximum
displacement from the equilibrium position .
Q2. Which of the following is a longitudinal
wave?
A. Light
B. Radio wave
C. Sound
D. X-ray
2
,ANSWER: C
RATIONALE: Sound is a longitudinal wave
where particles oscillate parallel to the
direction of energy transfer. Light, radio
waves, and X-rays are transverse EM waves .
Q3. Calculate the wave speed if the frequency
is 50 Hz and the wavelength is 2 m.
A. 25 m/s
B. 52 m/s
C. 100 m/s
D. 200 m/s
ANSWER: C
3
, RATIONALE: Using the wave equation v =
fλ: v = 50 × 2 = 100 m/s .
Q4. What is the time period of a wave with a
frequency of 20 Hz?
A. 0.02 s
B. 0.05 s
C. 0.5 s
D. 20 s
ANSWER: B
RATIONALE: T = 1/f = 1/20 = 0.05 s .
4
